First Known Use of RAYLESS GOLDENROD

1923

rayless goldenrod

nounray·less goldenrod \ˈrā-ləs-\(Medical Dictionary)

Medical Definition of RAYLESS GOLDENROD

: a shrubby or herbaceous composite plant (Haplopappus heterophyllus synonym Isocoma wrightii) that occurs especially on open saline ground from Texas to Arizona and northern Mexico and causes trembles in cattle